1 stars

Bought the tumblers and the old fashioned glasses. Put them in the dishwasher for an initial cleaning and 3 out of 8 leaked and had substantial water inside the layers of glass. When using glass with the water in between the layers, it would leak out on you or wherever you placed it. Useless to me.

3 stars

We received a set of these as a wedding gift. We had them for about two months before one of them broke while being washed. The glass itself seems thin and not as substantial as other glass tumblers. The Duos tumbler itself is a nice size but made for big/adult hands so they're not so good for children.

I recently purchased the Tervis Tumblers which is the same concept of keeping liquids cold/hot without affecting the outside of the tumbler. These are much better and practically indestructible since it's polycarbonate vs glass.

4 stars

I prefer using glass tumblers. I have Tervis plastic tumblers as well (which my whole family uses) but I'm picky and like to drink out of glass :)
These held up for me for about a year. 1 broke right away (when I used the icemaker to add cubes...lesson learned..use only crushed or hand-add cubes).
The rest went through daily dishwasher cleanings for months before leaking into the insultor space.

5 stars

these glasses do exactly what I expected, keeping coffee or tea hot or keeping a cocktail cold without melting the ice. Not a problem to me, but you should know they are made of thin glass and careless use may break them. All in all, really glad I bought them, and the follow-up from Target has been amazing.

5 stars

Originally bought the tumblers to drink cocktails. Switched to using them for my hot tea in the morning. Absolutely love! Keeps tea so warm that I haven't had to nuke after adding creamer. Everyone that sees them falls in love too. One did slip out of my hand (right after I got them) and I caught it with my hip. There's a little crack on the inner wall of the rim, but it hasn't migrated to the surface.

5 stars

I started with the coffee cups and now have almost everything in the collection (I'm waiting on the espresso cups now). I've even reordered extra sets of the latte, old fashioned and tumblers. I find that this collection by Duos keeps drinks hotter than the similar insulated glassware by Bodum and that the presentation of beverages is more attractive in the Duos glassware. While I love all of the pieces, my only small problem is that the tumblers are just a little wide and not as easy to hold. I prefer the coffee,latte and old fashioned glasses above the tumblers.